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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2019-02-22 22:55:30 +0300 |
|---|---|---|
| committer |   Corey Minyard <cminyard@mvista.com> | 2019-02-22 14:59:25 -0600 |
| commit | 038903593317691cf5f87ba1286627f5e8ab5660 (patch) | |
| tree | 814065d11cddf10ce3abeb139e6509c5c50b01c3 /drivers/char | |
| parent | ipmi_si: Remove hacks for adding a dummy platform devices (diff) | |
| download | linux-dev-038903593317691cf5f87ba1286627f5e8ab5660.tar.xz linux-dev-038903593317691cf5f87ba1286627f5e8ab5660.zip | |
ipmi_si: Potential array underflow in hotmod_handler()
The "ival" variable needs to signed so that we don't read before the
start of the str[] array. This would only happen the user passed in a
module parameter that was just comprised of space characters.
Fixes: e80444ae4fc3 ("ipmi_si: Switch hotmod to use a platform device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Message-Id: <20190222195530.GA306@kadam>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/ipmi/ipmi_si_hotmod.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/char/ipmi/ipmi_si_hotmod.c b/drivers/char/ipmi/ipmi_si_hotmod.c index 1433055a9705..03140f6cdf6f 100644 --- a/drivers/char/ipmi/ipmi_si_hotmod.c +++ b/drivers/char/ipmi/ipmi_si_hotmod.c @@ -187,7 +187,8 @@ static int hotmod_handler(const char *val, const struct kernel_param *kp) char *str = kstrdup(val, GFP_KERNEL), *curr, *next; int rv; struct ipmi_plat_data h; - unsigned int len, ival; + unsigned int len; + int ival; if (!str) return -ENOMEM; |